Analysts believe the British jihadi in the video may not have been James
Foley's killer, although it is accepted that the journalist was murdered

The video of James Foley’s execution may have been staged, with the actual murder taking place off-camera, it has emerged.

Forensic analysis of the footage of the journalist’s death has suggested that the British jihadist in the film may have been the frontman rather than the killer.

The clip, which apparently depicts Mr Foley’s brutal beheading, has been widely seen as a propaganda coup for Islamic State miltant group.

But a study of the four-minute 40-second clip, carried out by an international forensic science company which has worked for police forces across Britain, suggested camera trickery and slick post-production techniques appear to have been used.